AutoCodes – Generic – P2505

P2505 Code - ECM/PCM Power Input Signal

Quick Answer

When the ignition switch is turned "ON", the battery voltage is applied from the battery to the Powertrain Control Module (PCM)/Engine Control Module (ECM) through the main relay. Common causes include Low battery voltage, Faulty Powertrain Control Module (PCM)/Engine Control Module (ECM), ECM/PCM harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P2505 indicates ECM/PCM Power Input Signal.
Common causes: Common causes include Low battery voltage, Faulty Powertrain Control Module (PCM)/Engine Control Module (ECM), ECM/PCM harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 27,221

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 16, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2505 Description

When the ignition switch is turned "ON", the battery voltage is applied from the battery to the Powertrain Control Module (PCM)/Engine Control Module (ECM) through the main relay. In case that the ignition switch is turned "OFF", the ECM/PCM is supplied with power through the battery power input line to control the basic operation of the vehicle. The ECM/PCM set the OBDII code when the ECM/PCM Power Input is out of factory specifications.

OBDII Code P2505 - ECM/PCM Power Input Signal - AutoCodes.com — P2505 Code - ECM/PCM Power Input Signal

What does this mean?

What are the Possible Causes of the DTC P2505?

Low battery voltage
Faulty Powertrain Control Module (PCM)/Engine Control Module (ECM)
ECM/PCM harness is open or shorted
ECM/PCM circuit poor electrical connection

How to Fix the DTC P2505?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2505 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2505 code?

Need more information on how to fix the P2505 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2505 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P2505 Chrysler — ECM/PCM Power Input Signal
P2505 Dodge — ECM/PCM Power Input Signal
P2505 Ford — ECM/PCM Power Input Signal
P2505 Hyundai — ECM/PCM Power Input Signal
P2505 Jeep — ECM/PCM Power Input Signal
P2505 KIA — ECM/PCM Power Input Signal
P2505 Mazda — ECM/PCM Power Input Signal

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2505 Code

1. What are the common symptoms of OBDII code P2505 (ECM/PCM Power Input Signal)?

- Common symptoms include engine stalling, rough idling, poor acceleration, and difficulty starting the vehicle.

2. What are the possible causes of OBDII code P2505?

- Possible causes include a faulty ECM/PCM power input signal, damaged wiring or connectors, a weak battery, or a malfunctioning alternator.

3. How can I diagnose OBDII code P2505?

- To diagnose P2505, use a diagnostic scanner to read the trouble code and perform a thorough inspection of the power input circuit, battery, and alternator.

4. What is the typical repair for OBDII code P2505?

- The typical repair involves repairing or replacing damaged wiring or connectors, testing and replacing the battery if necessary, or repairing/replacing the alternator.

5. Can I drive my vehicle with OBDII code P2505?

- It is not recommended to drive your vehicle with code P2505, as it can lead to further damage and safety issues. It's best to address the problem promptly.

6. How much does it cost to fix OBDII code P2505?

- The cost of repairing OBDII code P2505 can vary depending on the underlying issue and labor rates. It's best to consult a mechanic for an accurate estimate.

7. Is OBDII code P2505 easy to fix by myself?

- Fixing P2505 may require some automotive knowledge and tools. If you are familiar with electrical systems and have the necessary tools, you may be able to fix it yourself.

8. Can a weak battery trigger OBDII code P2505?

- Yes, a weak battery can trigger code P2505 as it may cause voltage fluctuations in the ECM/PCM power input signal.

9. Will resetting the trouble codes make OBDII code P2505 disappear?

- Resetting the trouble codes may temporarily clear the code, but if the underlying issue is not resolved, the code is likely to reappear.

10. How important is it to address OBDII code P2505 promptly?

- It is important to address OBDII code P2505 promptly to prevent further damage to the vehicle's electrical system and ensure proper engine operation.